Therapeutic vibrator.



5.. H. AMET. THERAPEUTIC VIBRATOR. APPLICATION FILED AUG. 19, 1909,

1,017,840. Patented Feb. 20, 1912.

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EDWARD HfAMET, or REDONDO BEACH, camromvn.

' THERAPEUILIC VIBRATOR.

' Specification of Letters Patent.

Application filed August 19, 1909. Serial No. 513,692.

To all whom it may concern:

Be it known that I, EDWARD H. AMn'r, a citizen of the United States,residing at Redondo Beach, in the county .of Los Angeles and State ofCalifornia, have in body by application thereto of vibrations.

similar to tone vibration.

. l The principle of this invention is the employment of a rapidlyrotating unbalanced rotor in connection with an electric motor forapplying the vibrations thereby produced to the body or part to betreated.

It is desirable to avoid transmitting the vibrations to surroundingobjects, and in carrying out this invention provision is made wherebythe vibrating apparatus will not set up vibrations in the structure ofthe building in which'it is contained.

An object of the invention is to provide a vibrator of cheap and simpleconstruction devoid of reciprocating parts and which is capable ofregulation to produce various tone vibrations as required.

The accompanying drawings illustrate the invention. I

' Figure 1 is a plan of a cot provided with this invention. Fig. 2 is alongitudinal sectional elevation of the cot shown in Fig. 1. Fig. 3 is aview of a vibrator that may be applied to said cot, to a chair, to afoot rest, a hand rest or any other device capable of transmitting the.vibrations to the body. A fragment of the cot and the means forattaching the vibrator thereto are shown. Fig. 4 is an enlargedsectional detail of the vibration insulator for the legs of the cot.Fig. 5 is a view of the bottom' of the insulator shown in Fig. 4.

The means to support the patient or subject to be operated upon may be aframe 1 of an ordinary spring cot, and said cot may be provided with aninclined head-rest 2. The cot and head-rest constitute a practicalapplicator for the treatment of the body in the instances illustrated inFigs. 1 and 2.

The cot bottom may be of any approved form or bottom for a cot, as wovenwire springs, canvas or other material that will support the body. Or incase it is so de- .electric motor.

' sired, the cot bottom may be a board supported at its ends on the endcross-pieces 4 of the cot, on which is supported the wire screens 3,shown in Figs. 1 and 2. To the cot bottom, 3 is secured a vibrationdistributing frame 5, to which is fixed the bearing frame or bracket 6of the vibrator. The vibration inducing rotary unbalanced weight 7 maybe of any suitable shape and radius and may have a speed of3,000'revolutions, more or less, per minute. In the form shown theunbalanced weight is fixed to the shaft 7 of the rotor 22 which is anThe unbalanced weight may be made of any suitable strong material asiron, brass, steel, etc., capable of standing the strain. Its thicknessand dimensions may be determined by the constructor and it may be of anysuitable form.

The legs 8 of the cot are provided with vibration insulators 9, one foreach leg and each insulator may consist of a rubber foot having acentral stem 10 to seat in a socket 11 in the leg 8 and having a centralconcavity 12 to act as an air cushion, the rub- Weight of the occupantof the cot.

The distributing frame 5 may be attached to the cot bottom 3 by anysuitable means, as bycla'niping devices, staples or clips 13, and alever or prop 14 may be pivoted at 15 to the frame and adapted to bethrown up into vertical or down into horizontal position to connect ordisconnect the headrest 2 from the vibrationdistributing frame. The useof the invention is not limited to a cot, but the vibrator may beapplied to chairs, hand-rests, feet-rests,'and other ap- Patented Feb.20, 1912.

pliances by which vibration may be applied to the human system or anydefinite thereof.

In practice to use the cot, shown in Fig. 1, the subject to be operatedupon, may sit or lie upon the cot, and in the latter case, he may placehis head or shoulders upon the head-rest 2, the rotor being caused torotate at a high velocity. The vibration is set up in the vibrationdistributing frame 5, and by that is transmitted to the cot bottom, andthe vibration may be made of any desired frequency, ranging from low tovery high tonic vibration. The rotor may be driven from a few hundred tomany thousand revolutions per minute. The

portion speed may be determined by the skilful op- 80 her being of suchthickness as to sustain the erator, and the motor may be caused to runat any desired rate of speed by the usual manner of regulating orcontrolling speed i not attempted to be shown in the drawings.

The bearing frame 6 may be secured to thedistributer by any suitablemeans and may constitute the fixed base of a suspended electric motor.In Fig. 3 a clamp 16 is shown for attaching the bearing frame 6 whichhas a swivel stem 17 provided with an annular groove 18, and the clamp16 .has a socket 19 in whichthe stem 17 is revolubly held by the setscrew 20 that has acylindrical tip 21 in the groove to retain the stem17 in the socket. In this form the plane of rotation, and consequentlythe direction of;

the vibratory waves may be changed by turning the frame 6 'on the swiveljoint thus formed. The rotor 22 rotating freely in the swiveled case fiallows this to be readily done.

The vibratory frame 6 may be of various forms and the difierent kinds offrame will I some A therapeutic vibrator comprising a support for thehuman body or apart thereof, an intermediary vibration distributer, ashaft, an unbalanced rotor fixed on the shaft, a bearing frame for saidrotor shaft connected with said intermediary means by swivel means, anelectric motor having a portion thereof fixed to thebearing frame and aportion fixed to the shaft, the motor being thus swiveled and thusadapted to direct its rotation in differentv directions thereby tochange the direction of vibration.

In testimony whereof, I have hereunto set my hand at Los Angeles,California, this 11th day of August, 1909. EDWARD H. AMET.

In presence of JAMES R. TOWNSEND, L. BELLE RICE.

